Imperfections in the cornea and lens cause refracted light to be focused in front of or behind the retina, making images appear blurry.

角膜和晶状体的缺陷导致折射的光聚焦于视网膜的前面或者后面，使得图像显示模糊。

Most mammal eyes have a structure called a lens—a transparent, convex structure whose shape refracts light to enable sight.

多数哺乳动物的眼睛都有一种晶状体结构——一种透明、凸起的结构，可折射光线成像。

That's the oxygen that refracts the blue light.

那是折射蓝光的氧气。

In 50 years, the light on the mountains, and the way every raindrop on a blade of grass refracts light will still be beautiful.

五十年后，山上的光，以及每一滴落在草叶上的雨滴折射出的光，仍然会很美。

A bunch of water particles in the air refract light exactly like this.

空气中的一束水粒子就像这样折射光线。

To accommodate, their eyes have a much rounder lens to refract light underwater, as well as teardrop-shaped pupils which can expand to 25 times their original size.

为了适应环境，它们拥有更圆的晶状体来折射水下光线，同时还拥有泪珠状的瞳孔，其瞳孔可以扩大25倍。

Now, when you observe an object through refracted light like this, what you’re seeing is an image, a visually reproduced copy of an object.

现在，当你像这样通过折射光观察一个物体时，你看到的是一个图像，一个物体的视觉复制副本。

Now, when you observe an object through refracted light like this, what you're seeing is an image, a visually reproduced copy of an object.

现在，当你像这样通过折射光观察一个物体时，你看到的是一个图像，一个物体的光学复制版本。

Rainbow colors always appear in the order of least refracted to most refracted light: RED ORANGE YELLOW GREEN BLUE VIOLET Sometimes light is reflected two times inside a raindrop.

彩虹的颜色总是按照从最少折射到最多折射光的顺序出现： 红 橙 黄 绿 蓝 紫罗兰 有时光在雨滴中会反射两次。

When multiple of these lenticular sheets with different lens distributions are layered in just the right way, they are able to refract light at a myriad different angles to create " dead spots " .

将许多这种在不同位置配有透镜的柱状透镜以适当的方式分层堆放，就能折射出千千万万种光线角度，从而制造视觉" 死角" 。

The arc shape of the rainbow comes from the way light is directionally scattered by the water droplets; the droplets send the refracted light back in a focused direction creating a circular path.

彩虹的弧形来自于光被水滴定向散射的方式；液滴将折射光沿聚焦方向发送回，形成圆形路径。

And just like those kinds of stories, there's a buried wisdom within Luca that shifts a little depending on who's looking at it, like the color of light refracting off a wave.

就像那些故事一样，卢卡内心深处隐藏着一种智慧， 这种智慧会根据观看者的不同而略有不同，就像波浪折射出的光的颜色一样。

Ideally, these surfaces work together to refract light in a way that accurately focuses light onto the retina, the layer of light-sensitive tissue at the back of the eye that works with the brain to give rise to vision.

理想情况下，这些面一起工作在某种程度上来折射光，准确地把光聚焦于视网膜，视网膜是在眼睛后面，感光的一层薄膜它和大脑一起工作来提升视力。